Echium candicans 'Select Blue'. At Longwood Gardens. Photo courtesy of Karl Gercens. Copyright Karl Gercens, an expert horticulturalist and plant enthusiast who gives lectures and classes around the USA including at Longwood Gardens. Conservatory Horticulturist at Longwood Gardens. Learn more about him and his love of all things horticulture at http://www.karlgercens.com/